package com.mmall.common;

import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.map.annotate.JsonSerialize;

import java.io.Serializable;

/**
 * Created by zhou on 2018/4/5.
 */
//实现序列化接口，但是对于空节点不需要在json中显示，因此需要一下注解
    //实现序列化接口后返回值将会自动json序列化
@JsonSerialize(include= JsonSerialize.Inclusion.NON_NULL)
public class ServerResponse<T> implements Serializable {
    private int status;
    private String msg;
    private T data;
    private ServerResponse(int status){
        this.status=status;
    }
    private ServerResponse(int status,T data){
        this.status=status;
        this.data=data;
    }
    private ServerResponse(int status,String msg,T data){
        this.status=status;
        this.msg=msg;
        this.data=data;
    }
    private ServerResponse(int status,String msg){
        this.status=status;
        this.msg=msg;
    }
    //在返回前端的信息需要json序列化，因此要将这个方法的返回值在序列中忽略掉
    @JsonIgnore
    public boolean isSuccess(){
        return this.status==ResponseCode.SUCCESS.getCode();
        //common包下创建响应编码的枚举类
    }

    public int getStatus() {
        return status;
    }

    public String getMsg() {
        return msg;
    }

    public T getData() {
        return data;
    }


    public static <T> ServerResponse<T> createBySuccess(){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode());
    }
    public static <T> ServerResponse<T> createBySuccess(String msg){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg);
    }
    public static <T> ServerResponse<T> createBySuccess(T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),data);
    }
    public static <T> ServerResponse<T> createBySuccess(String msg,T data){
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(),msg,data);
    }
    public static <T> ServerResponse<T> createByError(){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),ResponseCode.ERROR.getDesc());
    }
    public static <T> ServerResponse<T> createByErrorMessage(String errorMessage){
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(),errorMessage);
    }
    public static <T> ServerResponse<T> createByErrorCodeMessage(int errorCode,String errorMessage){
        return new ServerResponse<T>(errorCode,errorMessage);
    }

}
